package com.qf.controller;

import com.qf.dao.UserDaoImpl;
import com.qf.pojo.User;
import com.qf.service.AdminService;
import com.qf.service.AdminServiceImpl;

import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author 汤奇
 * @version V1.0
 * @Project BookPro
 * @Package com.qf.controller
 * @Description: 管理员登录
 * @Date 2022/5/20 14:34
 */
@WebServlet("/admin")
public class AdminController extends BaseServlet{
    public String login(HttpServletRequest request, HttpServletResponse response){
        //1.获取参数
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        //2.判断用户名和密码不为空, 如果为空跳转到登录页面
        if (username == null || password == null){
            return "redirect:"+request.getContextPath()+"admin/login.jsp";
        }

        //3.调用service校验用户名密码
        AdminService adminService = new AdminServiceImpl(new UserDaoImpl());
        User user = adminService.login(username, password);

        //4.根据结果判断进行重定向操作
        if (user != null){
            //5.将登录成功后的用户对象放入Tomcat的session会话中一直携带
            request.getSession().setAttribute("admin",user);

            //跳转到管理员首页
            return "redirect:"+request.getContextPath()+"/admin/admin.jsp";
        } else {
            //用户名 密码不正确, 跳转到登录页面重新登录
            return "redirect:"+request.getContextPath()+"/admin/login.jsp";
        }
    }
}
